So I think that the Tenet experiment has shown that people are not ready to attend theaters yet (in the USA), although there are also some restrictions also in play. (Has NY even opened its theaters yet? I don't think so? I mean, right there, you lost NYC on opening weekend.)
'''Tenet''' tallies $20.2M as Americans step back into theaters
Tenet should have opened to at least $70 million in normal times in the USA over a holiday weekend. I think ultimately it made around $30 million. They probably needed $500 million [world wide] to break even, although they are doing better overseas. They put all their eggs in this basket financially, expecting a windfall... and then pushed a theater opening when the industry was not ready to have an opening. I am sure they will do a re-release if the USA improves its theater conditions under COVID, but it won't be nearly as good due to word of mouth that the film simply is not as great as touted.
I'm a little irked with the comparisons to "The Prestige," which is one of my favorite movies I have ever seen and far more impeccably crafted. As far as audience scores, you cannot actually compare the two because the audience is very different. The "B" rating for "The Prestige" from general audiences is actually to be expected because it's a very niche film -- topically, and in terms of approach (it's a psychological drama with a convoluted time line, more historical in setting, personal targeted performances, a thinking person's film, etc.)... it would have never been a general audience film or even a group decided to go based on broad topical manner. This is very unlike TENET, which was promoted as a huge general audience film more in line with Inception (they hoped) in terms of audience cross-section and the mass market appeal. To summarize, I'm not surprised by a B rating from audiences because of the film's complexity and niche spot, regardless of quality; but TENET was so popularized and generalized that a B rating is more indicative of quality than the targeting of the audience.
[Note: I'm still surprised Inception was as big as it became and crossing the typical audience boundaries to become mass-market. But it's like "Nolan" diffused to be fuzzy enough that general audiences of all kinds could follow it. And that is what TENET tries to be, but it's not as coherent, is more confusing, and has less heart/soul to identify with. The lead is written to be particularly "cool" in approach, versus providing a palpable humanity like Cobb did in terms with his love for his wife and his children, which drives Inception's entire plot.]
Anyway I think they should have held off longer on TENET and just ate 2020 losses, now they went out early and the film now has lost potential value.